package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;


@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        // ①. 将页面提交的密码password进行md5加密处理, 得到加密后的字符串
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        // ②. 根据页面提交的用户名username查询数据库中员工数据信息
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
        // ③. 如果没有查询到, 则返回登录失败结果
        if (emp == null) {
            return R.error("登陆失败");
        }
        //④. 密码比对，如果不一致, 则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("登陆失败");
        }
        //⑤. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }
        //⑥. 登录成功，将员工id存入Session, 并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     *
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //清理session中保存的当前登陆的员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");

    }

    /**
     * 新增员工
     *
     * @param request
     * @param employee
     * @return
     */

    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工，员工信息：{}", employee.toString());

        //设置初始密码123456，需要进行Md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        /*//创建时间
        employee.setCreateTime(LocalDateTime.now());
        //更新时间
        employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户的id
        long empId = (long) request.getSession().getAttribute("employee");
        //创建人
        employee.setCreateUser(empId);
        //更新人
        employee.setUpdateUser(empId);*/

        employeeService.save(employee);

        return R.success("新增员工成功");
    }


    /**
     * 员工信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page={},page={}", page, pageSize, name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //A. 构造分页条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //B. 构建搜索条件 - name进行模糊匹配
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);

        //C. 构建排序条件 - 更新时间倒序排序
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //D. 执行查询
        employeeService.page(pageInfo, queryWrapper);

        //E. 组装结果并返回
        return R.success(pageInfo);
    }


    /**
     * 根据id修改员工信息
     *
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info(employee.toString());

        //2). 服务端Controller接收页面提交的数据并调用Service更新数据
       /* Long empId = (Long) request.getSession().getAttribute("employee");

        employee.setUpdateTime(LocalDateTime.now());

        employee.setUpdateUser(empId);*/

        //3). Service调用Mapper操作数据库
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息");
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到对应的员工信息");


    }
}



